import java.math.BigInteger;
import java.util.Scanner;

public class BigIntegerTest {
    public static void main(String[] args){
        Scanner in=new Scanner(System.in);
        System.out.print("How many numbers do you need draw?");
        int k=in.nextInt();

        System.out.print("What is the highest number you can draw?");
        int n=in.nextInt();

        BigInteger lotteryOdds=BigInteger.valueOf(1);

        for(int i=1;i<=k;i++){
            lotteryOdds=lotteryOdds.multiply(BigInteger.valueOf(n-i+1)).divide(BigInteger.valueOf(i));
        }
        System.out.println("Your odds are 1 in "+lotteryOdds+".Gook Luck!");
    }
    
}

//BigInteger      BigDecimal